1. Main uses of intelligent Vespa flowmeter

High precision integrated flowmeter for steam, liquid and steam. The Vespa flowmeter is a differential pressure type and velocity average type air flowmeter. The principle of the flowmeter is based on the gas pressure caused by the controller in the fluid. The verapamil reflects the true water flow of the fluid, with a precision of ± 1.0% and repeatability of ± 0.1%. The outstanding advantage of Vespa is to output a very stable and pulseless gas pressure data signal of beverage

Basic principle of Vespa flowmeter

When the fluid passes through the probe, a high-pressure main production area is created in the front side, and the working pressure of the high-pressure main production area is slightly higher than the negative pressure of the pipeline. According to the basic principle of Bernoulli equation, the speed of fluid passing through the probe is accelerated, resulting in a low-pressure main production area behind the probe, and the working pressure of the low-pressure main production area is slightly lower than the negative pressure of the pipeline. The flow of fluid from the probe creates a part of vacuum pump at the back of the probe, and vortex appears on both sides of the probe. The cross section of the probe, the surface roughness and the position of the low pressure tap hole are the primary conditions to determine the characteristics of the probe. The stability of low-pressure data signal and its fundamental effect on the precision and characteristics of constant speed probe. The average differential pressure caused by the average velocity of the fluid can be accurately detected by the probe. There are many pairs of pressure taps arranged in a regular way in the high and low pressure areas of the Velcro constant speed total flow probe, so that the water flow will become

2. Design characteristics of mass flowmeter parameter probe

The probe with the cross-section of bullet head can cause accurate pressure distribution and fixed fluid separation point; the low-pressure pressure pressure tapping hole located on both sides of the probe and before the fluid separation point can be converted into a stable gas pressure data signal, and the plug can be reasonably removed. The internal integrated structure can prevent water leakage of data signal, improve the compressive strength of probe structure, and maintain long-term high precision.

3. The anti blocking design scheme of the Vespa probe the Vespa total flow probe completely solves the problem that the plug-in total flow probe such as Annubar is easy to block with its special blocking design scheme, which makes the blocking level of the total flow probe of the uniform tube achieve an unprecedented height width ratio.

The high pressure tap hole of the probe is not easy to be blocked in the front side of the probe to generate a high pressure area, and the working pressure is slightly higher than the negative pressure of the pipeline, which prevents the particles from entering. It must be noted that the flow rate at the high pressure tap hole of the probe is zero, and no matter block will enter the tap hole. When starting, under the negative pressure effect of the pipeline, the fluid enters the elbow and quickly produces the situation of balanced working pressure. When the working pressure balance state is generated, the fluid encounters high pressure at the elbow inlet, bypasses and does not enter the elbow.

4. The advantage of the metal flowmeter probe is that the low-pressure hole of the Vespa flowmeter keeps substantially blocked. Under the action of vortex street force, dust, gravel and particles are concentrated at the back of the probe. That's why autumn leaves have been concentrated behind downwind houses. Other probes are located in the vacuum pump area at the end of the probe because of the low-pressure tap hole. Under the action of vortex street force, the low-pressure tap hole of the probe is quickly blocked by the residue generated by the vortex. Vespa's unique design allows the low pressure taphole to be located on both sides of the probe, at the front of the fluid separation point and the wake area. In essence, this kind of design scheme can avoid blocking and create a very stable low-voltage data signal.

● it can measure a wide variety of substances and is widely used

High precision and large measurement range ratio

● the probe pressure tapping hole is substantially blocked

● the measured data signal is stable with small fluctuation

● low pipeline pressure loss

Special bullet shaped double cavity structure with high toughness

● low installation cost, maintenance free foundation

● be able to install and maintain online

5. Characteristics of Velcro air flow meter

● smooth data signal

The low-pressure pressure tapping hole of Vespa is located on both sides of the probe and in the middle of the separation point between the fluid and the probe, so as to eliminate the vortex fluctuation area.

Excellent long-term high precision

Vespa ensures long-term stability of precision due to:

(1) it will not be damaged, stained or greased.

(2) there is no movable component in the structure.

(3) the blocking condition is eliminated in the design scheme. In front of the probe, the high negative pressure area tightly surrounds the probe, so that the high pressure tapping hole is not easy to be blocked. It is very critical that the low-pressure hole is located on both sides of the probe, and the fluid passes through the surface obliquely, so that the low-pressure hole is not easy to be swept, while other probes are very easy to be blocked, because their low-pressure hole is in the low-pressure fluctuating area where the residue gathers.

Extremely low installation cost of intelligent Vespa flowmeter

(1) only a few feet of wire frame welding must be carried out, and the installation is relatively simple and convenient.

(2) use common tools to keep pressure relief online installation.

(3) all valves and sockets of all kinds of instruments and equipment only need simple assembly line, and the cost of assembly line must be very low.

● very low operating costs

(1) Vespa flowmeter is a design scheme of non collapsing throttle valve. As a plug-in total flow probe, Vespa's operation cost is very low.

(2) Vespa flowmeter only causes very low working pressure loss, which is typically lower than 0.7kpa

(3) the working pressure loss caused by one orifice component exceeds 14kpa

(4) compared with the orifice plate, the kinetic energy loss of Vespa is reduced by 95%.

● Vespa has avoided blocking in many aspects in the continuous work, but in the following situations, Vespa still needs to